/*******************************************************************************
 * Copyright 2011 Alexandre Zglav and Morphiastic
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package com.morphiastic.analysis.filters;

import java.io.IOException;
import java.util.Map;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentBuilder;
import com.morphiastic.analysis.AnalysisComponentDefinition;
import com.morphiastic.utils.EqualsUtil;
public class UniqueTokenFilter extends ElasticFilter{
	
	public static final String ONLY_ON_SAME_POSITION_PARAM_KEY = "only_on_same_position";
	private Boolean onlyOnSamePosition;
	
	public UniqueTokenFilter(String defName){
		this(null,defName);
	}
	
	public UniqueTokenFilter(Map<String,String> params, String defName){
		
		super(ElasticFilterType.unique, defName);
		
		if(params!=null){
			
			 
			String ospParam = params.get(ONLY_ON_SAME_POSITION_PARAM_KEY);
			if(ospParam!=null && !ospParam.isEmpty()){
				this.onlyOnSamePosition = Boolean.parseBoolean(ospParam);
			}
		}
	}
	
	@Override
	public boolean hasCustomParams() {
		 if(this.onlyOnSamePosition != null)return true;
		 return false;
	}
	

	@Override
	public XContentBuilder addToBuilder(XContentBuilder mappingBuilder) throws IOException {
		mappingBuilder.startObject(getDefinitionName())
		.field("type", getComponentSubTypeName());
		if(this.onlyOnSamePosition != null){
			mappingBuilder.field(ONLY_ON_SAME_POSITION_PARAM_KEY, this.onlyOnSamePosition.booleanValue());			
		}
		return mappingBuilder;
	}
	

	@Override
	public void setParamsFromSettings(Settings settings) {
		String ospParam = settings.get(ONLY_ON_SAME_POSITION_PARAM_KEY);
		if(ospParam!=null && !ospParam.isEmpty()){
			this.onlyOnSamePosition = Boolean.parseBoolean(ospParam);
		}
	}
	

	@Override
	public boolean areEquivalentDefinitions(AnalysisComponentDefinition other){
		if(other==null)return false;
		UniqueTokenFilter o;
		try {
			o = (UniqueTokenFilter)other;
		} catch (ClassCastException e) {
			return false;
		}
		return 
		EqualsUtil.areEqual(this.onlyOnSamePosition, o.onlyOnSamePosition);
	}
	
	
}
